World Intellectual Property Organization

How to File your International Application

(Training Materials)

Learn the PCT Video Series

In this episode, Matthias Reischle, Deputy Director, PCT Legal Division, discusses: the correction and/or addition of priority claims; calculating the time limit for the correction and/or addition of priority claims; invitations from the receiving Office, or the International Bureau, to correct the priority claim; and situations where priority claims are declared void.

Viewing difficulties?  Learn the PCT Video Series is also available on YouTube.

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